Emilio Cobos Álvarez 3d29b274ae Bug 1620359 - Don't clear the "uses viewport units" bit when a font that doesn't cause a style change loads. r=jfkthame ... This is probably an old-ish bug made more frequent by the font loading optimizations. PostRebuildAllStyleData is a bit of a misnomer, but was always calling ClearCachedData() on the style set, even if we weren't guaranteed to restyle every element. This means both wasted work and correctness issues (as the "uses <rare-feature>" bits are cleared during this call, on the assumption that we'll then visit all elements and that'd recompute it properly). For now, unify a bit the different code paths and only clear these bits if we're guaranteed to restyle all elements. I should rename this to something better in a follow-up, and ideally also decouple the ClearCachedData() calls a bit... Differential Revision: https://phabricator.services.mozilla.com/D65740 --HG-- extra : moz-landing-system : lando		2020-03-06 20:11:51 +00:00
..
geckolib	Bug 1620359 - Don't clear the "uses viewport units" bit when a font that doesn't cause a style change loads. r=jfkthame	2020-03-06 20:11:51 +00:00